GRADE 1 Q QUADRANT Qualitative Filter PaperEquivalent to Whatman grade 1 FF, this pre-folded filter paper is commonly used in labs where you need to separate a solid or precipitate from the filtrate.Made from high alpha-cellulose cotton, this standard lab filter is not intended for ashing.APPLICATIONSscience : Routine qualitative analytical separations and liquid clarification in labsfood : Solid foodstuffs separation and liquid extraction, fat content determinationbeverage : Analysis and filtration of dense liquids like fruit pulps, musts, syrups, oil or plant extractsagriculture : Soil analysis and seed testingenvironment : Medium particles collection for pollution monitoring (stain intensity)education : Basic qualitative separations teaching and paper chromatographyMEDIUM RETENTIONRetains medium-fine crystalline precipitates like:Sulfates (Pb, coarse form of Ba and Ca)Carbonates (Ba, Ca)Phosphates (Al, Pb, Struvite)Chromates (Fe, As, Pb)Ca Oxalate (hot), Pb Oxidepaper : pure cotton celluloseflow : mediumretention : 10~15 μm (medium)speed : 30~35 s (10ml DIN 53137)size : ⌀ 125 mmthickness : 150 μmweight : 86 g/m²ash : 0.1%qty : 50 discsPRE-FOLDEDThese Quadrant Folded Filters saves folding time when filtration is done repetitively.Use our pleating equivalent ST001-125v for even faster filtration.Suitable for gravity filtration in standard funnels, not vacuum.EQUIVALENCE & SIZESee the cross-reference table and size diagrams in the photos to choose the appropriate reference and diameter of your circles.
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